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CO2 generating absorbent pads

a technology of absorbent pads and absorbent pads, which is applied in the direction of packaging foodstuffs, containers preventing decay, packaging goods, etc., can solve the problems of reducing commercial acceptance and achieve the effect of enhancing the inner environment of the packag

Active Publication Date: 2007-03-13
LONGER SHELF LIFE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]A method and means for enhancing the inner environment of a package containing perishable merchandise include taking a closable package containing perishable merchandise and placing in the package a multi-layered sheet including a plurality of layers comprised of moisture absorbing materials to absorb any residual moisture emanating from the perishable merchandise. The multi-layered sh...

Problems solved by technology

Issues with cost, consumer acceptance, and fluid absorbency as well as the design criteria to keep the raw materials from direct contact with the perishable products had diminished their commercial acceptance.

Method used

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  • CO2 generating absorbent pads
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  • CO2 generating absorbent pads

Examples

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examples

[0053]The following are examples of tests on two embodiments of the invention:

example # 1

Example #1

[0054]This test involved an airlaid web with a basis weight of 150 grams per square meter (basis weight determines thickness and therefore absorbency) that contained 22.5 grams per square meter of a mixture of (12% by weight Citric Acid and 88% by weight sodium bicarbonate). Citric acid was chosen for its food contact and regulatory approvals vs. acetyl salicylic acid that requires operators and materials handlers to wear respirators to comply with OSHA guidelines for airborne particulate irritants. Sodium bicarbonate was chosen for its reactivity in the presence of moisture. Both ingredients had previously survived processing checks and demonstrated efficacy.

example # 2

Example #2

[0055]This test involved an airlaid web with a basis weight of 150 grams per square meter that contained 40 grams of a mixture of (20% by weight Citric Acid and 80% by weight sodium bicarbonate).

[0056]This type of “Active Pad” has applications anywhere there is a need for atmospheric modification with CO2 to extend the useful life of perishable products. Applications include Floral, Bakery, Deli, Meat, Seafood, Produce, and Consumer uses. Existing “soaker pads” found in meat tray packs in grocery stores could serve both their existing use and, as a result of this invention, serve to modify the atmosphere in the package extending shelf life of the product. For example, pallet shipments of strawberries from the west coast are currently sealed in a bag and gassed with CO2. Replacing that process with an appropriate sized Pad would yield significant cost savings to the shipper in capital equipment, labor, and materials costs.

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PUM

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Abstract

A method and means for enhancing the inner environment of a package containing perishable merchandise include taking a closable package containing perishable merchandise and placing in the package a multi-layered sheet including a plurality of layers comprised of moisture absorbing materials to absorb any residual moisture emanating from the perishable merchandise. The multi-layered sheet includes a quantity of CO2 generating material incorporated therein. The CO2 generating material is exposable to humidity and any residual moisture within the package and any moisture absorbing material to allow the CO2 generating material to emit an atmosphere of CO2 within the package from exposure to moisture within the air in the package, and to absorb any residual moisture in the package.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Application No. 60 / 477,108, filed on Jun. 9, 2003.BACKGROUND OF THE INVENTION[0002]Preservation of perishable package goods by the presence of CO2 within the package is a recognized beneficial phenomenon. Issues with cost, consumer acceptance, and fluid absorbency as well as the design criteria to keep the raw materials from direct contact with the perishable products had diminished their commercial acceptance. Placing some sort of a CO2 generating means within the package has also been recognized, but is a less than perfected art. As indicated, fluid within the package from the perishable product can be a complicating factor.[0003]It is therefore a principal object of this invention to provide a CO2 generating means for inclusion in a package of perishable goods that is inexpensively produced, effective as a CO2 generator, and which will also deal with the matter of residual liquid i...

Claims

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Application Information

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IPC IPC(8): B32B9/04A23L3/3427B65D81/26
CPCB65D81/264A23L3/3427Y10T442/277
Inventor FINNEGAN, MICHAEL J.BOLDT, WESLEY L.
Owner LONGER SHELF LIFE LLC
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